To find the original price of the car, you can use the following equation:
Original Price - Discount = Sales Price
Let's call the original price "X." You have the sales price as $12,590, and it's given that this is 20% off the original price:
X - 0.20 * X = $12,590
Now, simplify and solve for X:
0.80 * X = $12,590
Divide both sides by 0.80 to isolate X:
X = $12,590 / 0.80
X = $15,737.50
So, the original price of the car was $15,737.50.